NON-CONTACT WIRELESS COMMUNICATION COIL, TRANSMISSION COIL, AND PORTABLE WIRELESS TERMINAL

In a coil unit, a first magnetic body 11, a first coil 12 for non-contact power transmission, a second magnetic body 21, a substrate 30, and a second coil 22 for non-contact wireless communication are laminated in this order in the thickness direction of the coils. The first coil 12 and the second c...

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Bibliographic Details
Main Authors KOYANAGI YOSHIO, HIROBE TAKANORI, UEJIMA HIROYUKI
Format Patent
LanguageEnglish
Korean
Published 19.05.2014
Subjects
BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
GENERATION
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SYSTEMS FOR STORING ELECTRIC ENERGY
TELEPHONIC COMMUNICATION
TRANSFORMERS
TRANSMISSION
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Summary:In a coil unit, a first magnetic body 11, a first coil 12 for non-contact power transmission, a second magnetic body 21, a substrate 30, and a second coil 22 for non-contact wireless communication are laminated in this order in the thickness direction of the coils. The first coil 12 and the second coil 22 at least partially overlap each other. A region in which the first coil and the second coil do not overlap each other is provided on the inner circumferential side of the first coil. The second coil 22 overlaps the outer circumference of the first coil 12. A resonance frequency of the first coil 12 is lower than a resonance frequency of the second coil 22. The permeability of the first magnetic body 11 is greater than the permeability of the second magnetic body 21.
Bibliography:Application Number: KR20147009494